DESCRIPTION:
Maxwell Technologies’ 7025E Dual Port RAM High Speed CMOS® microcircuit features a greater than 100 krad (Si) total dose tolerance, depending upon space mission. The 7025E is designed to be used as a stand-alone 128k-bit Dual Port RAM or as a combination MASTER/SLAVE Dual-Port RAM for 32-bit or more word systems. This design results in full-speed, error-free operation without the need for additional discrete logic. The 7025E provides two independent ports with separate control, address, and I/O pins that permit independent, asynchronous access for reads or writes to any location in memory. An automatic power down feature controlled by CS permits the on-chip circuitry of each port to enter a very low standby power mode.

FEATURES:
• 8K x 16-bit dual port RAM
   - Stand Alone
   - Master Slave
• RAD-PAK® radiation-hardened against natural space radiation
• Total dose hardness:
   - > 100 krad (Si), depending upon space mission
• Excellent Single Event Effects:
   -SELTH LET = >100 MeV/mg/cm2
   -SEUTH LET = 7 MeV/mg/cm2
• Package:
   -84 Pin RAD-PAK® quad flat pack
• Separate upper byte and lower byte control for multiplexed bus compatibility
• High speed access time: 35/45 ns
• Expandable to 32 bits or more using master/slave select when cascading
• High speed CMOS technology
   -TTL compatible, single 5V power supply
   -Interrupt flag for port-to-port communication
   -On chip port arbitration logic
   -Asynchronous operation from either port